Chisel.



No. 676.053. Patented lune Il, I90l. M. SPORLEDER.

CHISEL.

(Application led Def:4 24, 1900 (No Model.) 3 Sheets-Sheet I,

Patented lune Il, |90I. M. SPURLEDER.

No. 676,053. Patented lune Il, I90l. M. SPURLEDER.

CHISEL.

(Application filed Dec. 24, 1900 (No Model.) 3 Sheets-Sheet 3.

@T6/diaet? QpMee/a, 190mm l l f l vzhfargeys UNITED STATES PATENTOEEICE.

MICHAEL SPORLEDER, OF COLORADO CITY, COLORADO, ASSIGNOR OF ONE- IIALF TOTHOMAS M. MAI'ION, OF SAME PLACE.

CHISEL.

SPECIFICATION forming part of Letters Patent N o. 676,053, dated June 11, 1901. Application filed December 24,1900 Serial No.4(),967. (Nomodel.)

T @ZZ whom, t may concern:

Be it known that I, MICHAEL SPORLEDEE, a citizen of the United States,residing at Colorado City, in the county of El Paso and State ofColorado, have invented a new and useful Chisel, of which the followingis a specification.

This invention relates to a plug-cutting chisel for use in generalcarpentry, car-buildlo ing, and other work to which it may beapplicable; and the object of the same is to provide a tool that willreadily cut or form a recess to receive the head of a screw, nail, bolt,or the like and preserve the removed plug of x5 Wood intact in the toolor form it by a separate tool and reset it in the recess to make a flushfitting with the body or remaining portion of the material operated uponand fully cover and conceal the head of the screw, nail, 2o bolt, or thelike in a more durable and satisfactory manner than by the ordinaryfilling operation with putty or other similar substance.

The invention consists in the construction and arrangement of theseveral parts, which will be more fully hereinafter described andclaimed.

In the drawings, Figure 1 is a transverse vertical section of a tool orchisel and a portion of the handle therefor embodying the 3o features ofthe invention. Fig. 2 is an elevation of the parts shown by Fig. l. Fig.3 is a transverse vertical section of a portion of the improved device,showing a slight modification. Fig. -f is a transverse vertical sectionof the lower extremity of the improved device, showing a furthermodification wherein a single cutter is employed. Fig. 5 is a transversevertical section of a further-modified form of the improved device,showing a 4o double reversible construction. Fig. 6 is a sectionalelevation of a device similar to that shown by Fig. 5 and embodying afurther modification in the construction shown by the latter figure.Fig. 7 is a detail perspective view of one of the plunger pressureheadsused in the two forms shown by Figs. 5 and (5. Fig. 8 is a sectionalelevation of a further-modified and simple form of the improved deviceembodying the same principle 5o of operation. Fig. 9 is a horizontalsection taken in the plane of the line 9 9, Fig. 8. Fig.

10 is a transverse vertical section of the form of the device shown byFig. 8, showing a further modification. Fig. 11 is a transverse verticalsection of the improved device,shoW 55 ing a still further modification.Fig. 12 is a horizontal section taken in the plane of the line 12 12,Fig. 1l.

Similar numerals of reference are employed to indicate correspondingparts in the several 6o views.

The numeral l, Figs. 1 and 2, designates a stock having an upperdownwardly-converged socket 2 in which is fitted a chisel or other toothhandle. The precise form of the socket and the handle is not essentialto the practical operation of the invention; but the forms shown arebelieved to be the simplest. The stock has a bore 3 extendingtherethrough and has its lower extremity flared outwardly 7o to form anupwardly-converged seat 4, to frictionally receive a reversible cutter5, having an intermediate body portion 6 of a diameter equal to themaximum diameter of the said seat, and from said body the cutter taperstoward opposite ends to provide opposite engaging portions 7 to fit intothe said seat and capable of removal from the latter. At oppositeextremities of the cutter are tubular cutting-terminals 8 and 9, thetermi- 8o nal 8 being larger in diameter than the terminal 9. The saidterminals both have straight bores 10 and ll extending therefrom andcommunicate at an intermediate point and provide an opening entirelythrough the cutter, the bore 10 having a diametrieal extentapproximately equal to the outside diameter of the terminal 9, so that aplug cut by the terminal S will snugly fit and fill a recess formed bythe terminal 9. In the upper 9c portion of the bore of the stock is apresser 12, having a cylindrical body 13,With a screwsocket 14 extendinglongitudinally thereof, and an upper convex head 15, forming ashoulderin relation to said body. Surrounding the body 13, between a shoulder 16of the bore of the stock and the said head l5, is a spring 17, whichoperates to hold the presser at an elevated position in accordance witha preliminary adjustment and to always return loo said presser to itsnormal position when the latter is freed of applied force. In the socketl-t the upper enlarged screw-threaded end 1S of a plunger l0 isadjustably mounted and extends through the bores 10 and 1l of the cutter5, the adjustment ot the plunger being such that when a full downwardstroke thereof has terminated the lower end will be in direct alincmentwith the surrounding cutting edge of either one of the tubularcuttingterminals 8 or 9 and in accordance with the arrangement of thesaid terminals in relation to the stock. A lever 2t) extendstransversely through suitable slots 2l and 22 in the stock, above theinner shoulder 1G of the latter, the said lever being fulcrumed at oneend in the slot 22 and freely movable in the other slot 2l. The lever 20intermediately bears on the head l5 ot the presser, and by exerting adown ward force thereon the said presser and plunger carried therebywill be driven downwardly for expelling a plug against the action of thespring 17, and as soon as the lever is released the parts will beautomatically returned to normal position. The stock is also formed withan aperture 23 to give access t0 theinterior thereof for the insertionof a suitable implement to start the cutter in the event that it sticks,and the terminals 8 and 9 can be exteriorly shouldered, as shown, tocontrol the depth of penetration of the same. the degree of penetrationbeing changeable at will to suit different classes ot work or inproportion to the general dimensions of the cutter as an entirety.

The modiiied form of the device shown by Fig. 3 is in all respects anddetails similar to the tool just described, except that only one slot 24is formed in the upper portion ot' the stock and the operating-lever 25is intermediately fulcrumed in said slot and has its inner extremitybearing on the head of the presser, so that the latter and the plungerconnected thereto may be pressed downwardly by an upward pull on thelever.

The modification shown by Fig. t will have the same features ingeneralot the forms herctofore set forth, except that the cutter 2G hasa single tubularcutting-terminal27, and illustrating the intent to alsohave a tool or chisel of the class described wherein one stock will besupplied with a plurality ot cutters having cutting-terminals ofdifferent dimensions and one easily substituted for another in formingrecesses having different sizes, the cuttingterminals of the severalcutters being graded in accordance with a scale of measurement. Theterms illustrated by Figs. 5 and 0 embody the same principle, thatdisclosed by Fig. G being a slight modilication et the constructionshown by Fig. 5. In this instance the stoel; 1 has an Opening 2S thereinnear its lower end and has thereon a catch-spring 2f), with aninwardly-deflected lower end 30 freely movable through the said opening;but in other respects the structure of the said stoel; is the same asthat heretofore set forth, except that it is flared toward its lowerend. In the said stock a reversible holder 3l is removably held and hasopposite terminal-engaging portions 32, which are taperedcorrespondingly to and adapted to frictionally tit in the lower eX-tremity of the stock, and as an additional means ot securement andsafeguard against accidental disengagement of the holder from the stockeach tapered portion is formed with shouldered recesses 323 to receivethe inwardly-deflected lower end 30 ot the catchspring 25). The holderhas a bore 3i extending longitudinallyv therethrough and formed withterminal flares 35 to frictionally receive the tapered head ends 3G ofcutters 37 and 38, having tubular cutting-terminals 3.() and 40, whichhave the same proportionate relation as to size as the cutting-terminalsshown by Fig. l and for precisely the same purpose. 'l`he bores of thecutters extend completely therethrough, and in each cutter a plunger 41is movably mounted and of a dimension proportionate thereto. The innerextremities et the plungers are formed with screw-threads 42 andadjustably itted in screw-threaded sockets -tf ot pressers it, betweenwhich and the inner ends ot` the cutters springs t5 are located andsurround the plungers in a free manner. lt will he understood that thesprings operate to retract the plungers to normal iudrawn position inthe holder, and the inner opposed ends ot the pressers t4 are convexedand have projected between them and in contact therewith the broadenedend or extremity 46 ot' an operating-lever i7, [ulcrumed at one side ofthe holder and extended outwardly far enough to provide a convenientgrip for operating the lever. The lever is 0perated by an upward pull toforce either of the plungers downwardly into expelling position, and toaccommodate the operation thereof the holder has a slot i8 formedtherein, which is dared toward one side. As shown hy Fig. t5, therecesses are termed by circumterentially grooving the holder, so that anengagement with the catch-spring can be obtained at any circumferentialpeint without requiring a precise disposition of the parts to accomplishthis end. When it is desired to separate the engaged end of the holder,the catch-spring is drawn outwardly to release the lower deflected endthereof from the adjacent recess. Thc construction shown by Fig. t3embodies a single form ot presser 49 ot elongated form, having the innerscrewthreaded ends of the plungers adj ustably attached to the oppositeextremities thereof, and through a slot 50 in the said presser thelever, similar to the lever i7, extends and has operative contact withthe upper and lower centrally-extending or curved end walls 5l. Theoperation ot this modified device is in all respects similar to thatshown by Fig. 5.

Figs. 8 and show a simpliiied form of a device embodying the saineprinciple, and in this instance the stock 52 is ot elongated form andhas a iowerterminal lateral deflection 53, having a seat-opening 5tvertically disposed therein and flaring toward its lower portion.

Removably mounted in the said seat is a cutter 55, similar to that shownby Fig. 5, and in said cutter a plunger 56 is loosely mounted and isprovided with an elongated slot 57, through which extends a pin 58 toprevent separation of the plunger from the cutter, but permits freemovement of the plunger downwardly to a complete operative position.

The upper end of the plunger is provided with a head 58 to receive theblow or impact of a hammer or other implement to dislodge the plug fromthe cutter-terminal. The form shown by Fig. l0 is similar to that shownby Figs. 8 and 9; but the plunger 59 is formed with an elongatedelliptical slot G0 to provide laterally-projecting spring' members (3lto frictionally bear on the bore of the cutter and prevent too loosemovement of the plunger in the latter, but easily operated to performits expelling operation by a blow or pressure delivered or applied tothe head end thereof.

The form of the improved device shown by Figs. ll and l2 embodies meansof a modied nature for operating the plunger 62, the remaining partsbeing the same as those heretofore described, except that the stock isprovided with an upper vertically-disposed slot 63. On the upperscrew-threaded end G4 of the plunger a laterally-projecting head G5 isadjustably mounted and moves in and is extended through and beyond theouter margin of the slot 63, so that it can be struck or presseddownwardly against the action or resistance of a coiled spring 6G,surrounding the plunger andinterposed between the inner end of thecutter and the lower face of the head 65.

In all the forms of the device set forth the tubular cutting-terminalscan be sharpened from the outside and inside, one mode being preferablein some constructions and the other mode in the remaining constructions.It will be obvious, however, that the operation of sharpening will bepreferably carried on from the exterior or on the exterior surfaces ofthe tubular cutting-terminals, and the several forms of adjustment forthe plungers are to compensate for the shortening of the tubular cuttingextremities of the cutters and always maintain the same relation betweenthe cutters and the plungers and to have the said plungers move throughthe cutters to such an extent as to fully expel the plug, particularlywhen returning the plugs to the recesses as fillings therefor.

The salient features and advantages derived from the presentconstruction of device and its various modifications are that when theplug is cut by any one of the same it is compressed and can be retainedin the cutter ready for resetting in the recess and accuratelypositioned in the latter by expelling the same regularly by means of theplunger to `form a flush surface with the material in which the nail,screw, bolt, or the like has been placed and countersunk through themedium of the recess formed. Thus the grain of the wood can be bettercontinued to receive a polish or finish on the exterior and have thepoints of introduction of the said fastening devices less apparent fromthe exterior and a more durable than putty or analogous filling materialordinarily used. Another advantage is that therecess may be formed byone tool and the plug cut from a separate piece of material of a similarnature by another tool of complementary dimensions to accurately fit inthe said recess. Another advantage is the ease of removing andsubstituting different tools or of quickly bringing tools of differentdimensions into operative position in the same stock to accommodatedifferent sizes of fasteningheads embedded in the recesses formed. Thecomparative simplicity of the several devices is also essentiallyimportant, not only fromastaudpoint of economical manufacture, but alsofrom the important consideration of expeditiously accomplishing thework. Instead of having the cutters frictionally engage the stock orholder terminals the correlative engaging surfaces may be formed withscrew-threads, or other separable means of connection with a similarendin view may be adopted. In addition to the modifications fully disclosedfurther changes in the proportions, size, form, and minor details may bcresorted to without departing from the principlc of the invention.

In the use of the single cutter heretofore set forth in common work therecess for the plug is made by the nail-head when driven under thesurface or can be made uniform by the nail set employed incountersinking the nail-head, and the cutter in this instance is adaptedto form the plugs to lill the recesses where a number of nails aredriven.

Having thus described the invention, what is claimed as new is- 1. Thecombination with a stock, of multiple cutters adapted to be mounted inchangeable relation to the lower extremity of the stock for forming arecess adapted tohave a removable plug compressed into one expelledtherefrom into a recess made by the other, the outer surface of thecutting-terminal of the cutter being beveled, and a plunger whollyinclosed within the stock and movable through the cutters.

2. A chisel of the class described having a reversible cutter withtubular extremities of different diameters and adapted to have a plugcut by one of the latter compressed and retained therein, and a plungermovable through said tubular extremities for expelling said plug andcausing it to fit a recess of a corresponding size formed by the otherextremity of the cutter as a filling for the said recess.

3. A tool comprising a portable stock,tubu lar cutting devices mountedin changeable relation to one extremity thereof, and a single plungercarried by the stock for operation through either of the cuttingdevices, the cut- IOO IIO

ting ends of said devices having different diameters.

4. A tool comprising a stock, a reversible cutter having tubularcutting-terminals, and an adjustable plunger movable in the saidterminals.

5. A tool comprising a portable stock, a holder reversibly mounted insaid stock, tubular cutters removably mounted in the oppositeextremities of the holder, and a single plunger to operate as anexpelling means for both cutters.

6. A tool comprising a portable stock, a holder, reversibly mounted insaid stock, tubular cutters removably mounted in the oppositeextremities of the holder, the cuttingterminal of one cutter having aninside diameter equal to the outside diameter of the other, and a singleplunger to operate as an expelling means for both cutters.

7. A tool comprising a stock, a tubular cutter mounted in said stock, anexpelling device for cooperation with said cutter, and a presser toreceive the operating pressure for the plunger to which the latter isadjustably connected, said expelling device and presser being within thestock.

8. A tool comprising a stock, a tubular cutter therein, a plungermovably mounted in relation to the cutter, a presser adjustablyconnected to the plunger,said plunger and presser being inclosed Withinthe stock and a lever for engaging the presser.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two Witnesses.

MICHAEL SPORLEDER.

\Vitnesses:

CHAs. L. CUNNINGHAM, E. ANTHONY BoTT.

